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Artoria Caster 'Castoria' Guide: Skills, Synergies, Top Teams

by Joshua Apr 09,2025

Artoria Caster, affectionately known as Castoria within the Fate/Grand Order community, stands out as one of the most powerful and transformative support Servants in this acclaimed RPG. Introduced during the 5th Anniversary event, she has become indispensable for players aiming to tackle challenging content or optimize their farming strategies.

Unlike her Saber counterpart, Castoria's role isn't to wield a blade but to amplify her team's capabilities with significant buffs, accelerate Noble Phantasm charging, and extend the longevity of her allies. As a premier Arts support, she transforms even moderately powerful Servants into formidable forces when integrated into the right team composition.

Limited Availability

Before delving into Castoria's capabilities, it's crucial to note her status as a limited 5-star Servant. She appears only during designated banners, typically linked to anniversaries or major story chapters. If you spot her on the roster, it's advisable to use your Quartz, especially if you're constructing an Arts-focused team.

What Makes Castoria Special

In Fate/Grand Order, Servants come in diverse forms and with varied abilities. Castoria is designed to enhance Arts synergy and provide comprehensive team support. Her skill set is dedicated to boosting NP gain, amplifying damage, and facilitating rapid NP looping. She shines brightest when teamed with Arts-centric DPS Servants such as Space Ishtar, Summer Musashi, or Chloe.

Fate/Grand Order Artoria Caster 'Castoria' Guide - Skill sets, Synergies, and Best Team Compositions

Among her Append Skills, the third one is particularly useful as it increases damage against Sabers, a class that can otherwise easily penetrate her support defenses.

Playstyle and Combat Tips

Castoria is best utilized in the backline, where she can bolster her team without engaging in direct combat. While her personal damage output is modest, her buffs significantly enhance the performance of her allies. Deploy her Noble Phantasm early and frequently to maintain continuous buffs and mitigate the risk of enemy NP removal effects.

In boss encounters, coordinate her invincibility with another defensive skill to avoid redundancy. For farming scenarios, synchronize her buffs to maximize the impact of each NP chain for your DPS.

Artoria Caster transcends being just another iteration of Artoria; she is a top-tier support who has revolutionized combat strategies in Fate/Grand Order. Whether you're farming resources or confronting high-difficulty challenges, Castoria is an invaluable asset to any team.

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